Home / 54,439.52-81,664.43-21,162.15

Finding the Fourth Proportional to 54,439.52, 81,664.43 and 21,162.15

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Solution

The fourth proportional to 54,439.52, 81,664.43 and 21,162.15 is: 31,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,439.52 : 81,664.43 = 21,162.15 : x
  2. Step 2: Convert to fraction form
    54,439.52/81,664.43 = 21,162.15/x
  3. Step 3: Cross multiply
    54,439.52x = 81,664.43 × 21,162.15
  4. Step 4: Simplify right side
    54,439.52x = 1,728,194,811.51
  5. Step 5: Solve for x
    x = 1,728,194,811.51/54,439.52
  6. Step 6: Final answer
    x = 31,745.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.